Load Specifications
Load data in caliber 7.82 Warbird with .311 | 190gr | Winchester Silvertip bullet and 57 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Hodgdon Retumbo and Alliant Reloder-33.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 60,104 psi | 90% | 2982 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 47,326 psi | 71% | 2887 fps | 96.4% |
| Accurate High Country | <<locked>> | 84% | 58,378 psi | 88% | 3100 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 59,364 psi | 89% | 3107 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 84% | 57,319 psi | 86% | 3022 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 59,843 psi | 90% | 3097 fps | 100% |
| ADI AR 2217 | <<locked>> | 96% | 58,943 psi | 88% | 3077 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 59,872 psi | 90% | 3219 fps | 99.5% |
| ADI AR 2225 | <<locked>> | 98% | 58,146 psi | 87% | 3097 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 57,522 psi | 86% | 3018 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 56,913 psi | 85% | 3009 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 60,249 psi | 90% | 3087 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 58,407 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 59,117 psi | 89% | 3068 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 59,524 psi | 89% | 3084 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 57,392 psi | 86% | 3120 fps | 98.9% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 57,348 psi | 86% | 3110 fps | 98.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 60,060 psi | 90% | 3054 fps | 99.3% |
| Bofors RP15 | <<locked>> | 90% | 59,567 psi | 89% | 3077 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 58,813 psi | 88% | 3091 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 60,249 psi | 90% | 3087 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 56,376 psi | 85% | 3038 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 58,639 psi | 88% | 3028 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 57,580 psi | 86% | 3012 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 57,580 psi | 86% | 2920 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 58,508 psi | 88% | 3166 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,884 psi | 57% | 1926 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 59,277 psi | 89% | 2989 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 60,321 psi | 90% | 2986 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 58,682 psi | 88% | 3002 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 88% | 58,320 psi | 87% | 3081 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 92% | 57,246 psi | 86% | 2946 fps | 96% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 57,101 psi | 86% | 3081 fps | 100% |
| Lovex S071 | <<locked>> | 92% | 58,233 psi | 87% | 2959 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 58,552 psi | 88% | 3100 fps | 100% |
| Norma MRP | <<locked>> | 84% | 56,681 psi | 85% | 3048 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 60,031 psi | 90% | 3107 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 58,421 psi | 88% | 3031 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,899 psi | 58% | 1972 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 59,625 psi | 89% | 3150 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 58,769 psi | 88% | 3123 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 84% | 57,609 psi | 86% | 2986 fps | 100% |
| Rottweil R 905 | <<locked>> | 84% | 56,724 psi | 85% | 3002 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 49,458 psi | 74% | 2904 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 60,147 psi | 90% | 3054 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 59,103 psi | 89% | 2979 fps | 99.9% |
| Somchem S365 | <<locked>> | 82% | 59,988 psi | 90% | 2979 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 56,913 psi | 85% | 2966 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 56,971 psi | 85% | 2956 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 60,278 psi | 90% | 3048 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 86% | 60,249 psi | 90% | 3015 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 59,988 psi | 90% | 3114 fps | 100% |
| Vihtavuori N565 | <<locked>> | 90% | 57,217 psi | 86% | 3048 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 94% | 59,059 psi | 89% | 3120 fps | 99.8% |
| Vihtavuori N570 | <<locked>> | 94% | 56,478 psi | 85% | 3127 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 59,422 psi | 89% | 3084 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 56,826 psi | 85% | 2966 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 46,050 psi | 69% | 2769 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 44,019 psi | 66% | 2822 fps | 95.4% |
| Accurate High Country | <<locked>> | 80% | 50,691 psi | 76% | 2969 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 80% | 48,037 psi | 72% | 2913 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 80% | 50,024 psi | 75% | 2900 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 45,310 psi | 68% | 2851 fps | 98.9% |
| ADI AR 2217 | <<locked>> | 80% | 33,866 psi | 51% | 2585 fps | 96% |
| ADI AR 2218 | <<locked>> | 92% | 44,425 psi | 67% | 2917 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 31,227 psi | 47% | 2559 fps | 98% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 50,372 psi | 76% | 2900 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 49,922 psi | 75% | 2894 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 46,079 psi | 69% | 2851 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 44,947 psi | 67% | 2782 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 39,015 psi | 58% | 2730 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 51,329 psi | 77% | 2963 fps | 100% |
| Alliant Reloder-33 | 101.7 gr | 88% | 42,569 psi | 64% | 2841 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 94% | 45,818 psi | 69% | 2900 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,294 psi | 65% | 2756 fps | 96% |
| Bofors RP15 | <<locked>> | 80% | 42,960 psi | 64% | 2789 fps | 99.2% |
| Bofors RP30 | <<locked>> | 80% | 36,521 psi | 55% | 2667 fps | 97.1% |
| Bofors RP5 | <<locked>> | 80% | 46,079 psi | 69% | 2851 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 36,753 psi | 55% | 2664 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 80% | 47,834 psi | 72% | 2848 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,949 psi | 70% | 2828 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 53,896 psi | 81% | 2867 fps | 100% |
| Hodgdon Retumbo | 85.7 gr | 80% | 38,232 psi | 57% | 2785 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,427 psi | 43% | 1722 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 55,506 psi | 83% | 2933 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 56,594 psi | 85% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,472 psi | 73% | 2831 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 80% | 44,179 psi | 66% | 2835 fps | 98.7% |
| IMR 7977 Enduron | <<locked>> | 90% | 53,693 psi | 80% | 2890 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 84% | 33,011 psi | 49% | 2595 fps | 95.6% |
| Lovex S071 | <<locked>> | 80% | 39,740 psi | 60% | 2648 fps | 99.9% |
| Norma 217 | <<locked>> | 80% | 28,964 psi | 43% | 2500 fps | 96% |
| Norma MRP | <<locked>> | 80% | 49,153 psi | 74% | 2927 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 44,614 psi | 67% | 2851 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 80% | 40,132 psi | 60% | 2720 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,269 psi | 44% | 1768 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 37,623 psi | 56% | 2759 fps | 99.6% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 37,275 psi | 56% | 2713 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 50,662 psi | 76% | 2874 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 80% | 49,719 psi | 75% | 2887 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 46,253 psi | 69% | 2841 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 49,371 psi | 74% | 2884 fps | 99.9% |
| Somchem S361 | <<locked>> | 80% | 51,808 psi | 78% | 2864 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 55,999 psi | 84% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 49,966 psi | 75% | 2858 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 43,816 psi | 66% | 2736 fps | 99.6% |
| Vihtavuori N170 | <<locked>> | 88% | 49,197 psi | 74% | 2861 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 49,574 psi | 74% | 2858 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 48,689 psi | 73% | 2923 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 80% | 40,654 psi | 61% | 2740 fps | 97.7% |
| Vihtavuori N568 | <<locked>> | 82% | 38,435 psi | 58% | 2730 fps | 95.6% |
| Vihtavuori N570 | 97.8 gr | 88% | 45,411 psi | 68% | 2920 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 43,990 psi | 66% | 2851 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,296 psi | 69% | 2792 fps | 99.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 57 powders for 7.82 Warbird loaded with the .311 | 190gr | Winchester Silvertip. ADI AR 2218 delivers the highest muzzle velocity at 3,219 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,219 fps. Accurate 8700 gives the best case fill at 100 %, and 57 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.311" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2218, Alliant Reloder-50 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Vihtavuori N570, Hodgdon Retumbo, Alliant Reloder-33 rank at the top here: for 7.82 Warbird with the .311 | 190gr | Winchester Silvertip they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.